i put highlifter 4/156 1in spacers on the back of my kota cuz my 22-11-10 mudlites[kickass] were rubbing on the battery box the spacer were for a polaris and i had my freind turn them down in a lathe to make them fit in my rims and ran factory nuts in the spacers and the supplied ones on the spacers i have had no problems what so ever and think spacer will not hurt the quad in any way

 

you get the handling problems from the front end with spacers. thats the expensive end.